From Detective Conan Wiki

Shogakukan (株式会社小学館 Kabushiki kaisha Shōgakukan?) is a Japanese publisher of Japanese dictionaries, literature, manga, non-fiction, DVDs, and other media in Japan.

Shogakukan founded Shueisha which founded Hakusensha. These three separate companies, are together called the Hitotsubashi Group, one of the largest publishing groups in Japan. Shogakukan is located at Hitotsubashi, Chiyoda, Tokyo, and the other two companies are located in the same ward.

Shogakukan in the US[edit]

Shogakukan company, along with Shueisha, owns Viz Media, which publishes manga from both companies in the United States.

Shogakukan's licensing arm in North America was ShoPro Entertainment; it was merged into Viz Media in 2005.

Shogakukan's production arm is Shogakukan Productions Co.,Ltd. (now Shogakukan Shueisha Productions)